<template>
    <el-breadcrumb class="app-breadcrumb" separator="/">
        <transition-group name="breadcrumb">
            <el-breadcrumb-item
                v-for="(item, index) in levelList"
                :key="item.path"
                v-if="item.meta.title"
            >
                <span
                    v-if="item.redirect === 'noredirect' || index == levelList.length - 1"
                    class="no-redirect"
                    >{{ item.meta.title }}</span
                >
                <router-link v-else :to="item.redirect || item.path">{{
                    item.meta.title
                }}</router-link>
            </el-breadcrumb-item>
        </transition-group>
    </el-breadcrumb>
</template>

<script>
export default {
    created() {
        this.getBreadcrumb()
    },
    data() {
        return {
            levelList: null,
        }
    },
    watch: {
        $route() {
            this.getBreadcrumb()
        },
    },
    methods: {
        getBreadcrumb() {
            let matched = this.$route.matched.filter(item => item.name)
            const first = matched[0]
            if (first && first.name !== 'home') {
                matched = [{ path: '/home', meta: { title: '首页' } }].concat(matched)
            }
            this.levelList = matched
        },
    },
}
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
    display: inline-block;
    font-size: 14px;
    line-height: 50px;
    margin-left: 10px;
    .no-redirect {
        color: #97a8be;
        cursor: text;
    }
}
</style>
